Glossary

Screening Scheme Description

DNA test - CSNB

Congenital stationary night blindness

Briard

Details about the disease

CSNB is an inherited, degenerative disease caused by a defect in the gene RPE65, which encodes a protein that plays a crucial role in vision.

Clinical signs

The clinical effects include night blindness and a loss of vision in daylight that can vary between individual dogs. This disease manifests in Briard dogs from a young age (from 6 weeks-of-age onwards).

How it is inherited

The disease is described as an autosomal recessive condition. This means that a dog must inherit two copies of an abnormal gene (one from its mother and one from its father) before its health is affected. A dog that inherits only one copy of the abnormal gene (from its mother or its father) will have no signs of the disease, but will be a carrier and may pass the gene on to any offspring.

Which laboratories test for this condition?

How to responsibly breed from your DNA tested dog

If, once your dog is DNA tested, you would like to find out what their DNA test results mean, or how to select the right mate to avoid producing affected puppies, then please read our breeding advice and information on the following link http://bit.ly/2oSbtnn.

How to find out if a potential mate has been DNA tested

The Kennel Club’s “Health Test Results Finder” allows you to find the results of DNA tests carried out as part of official Kennel Club DNA testing schemes for any dog on the Kennel Club’s breed register. To access this free health tool, please follow this link http://bit.ly/1jyCFnc.